|
(YJLO2gD0 D£P.I((T,VE.VT OF PI; BL/C HE.-ILTH.I:VD E.Vl'lKOA4LIE:VT, Wturr Qatt(fn Control Drvrsion
<br />Ruti,rrurle - rimendmetu ,Vn l Page 3, Pernur ;Vo CO-0U00221
<br />3. Chemia7l.+ L'sed 77+e pennitree dtd riot spenJv any chemicals Jor tare in waters that mu>' be discharged fran
<br />• tltese nett urrtfulls. On this basis, no chemiads are approved under thts rtmendmenr. Prior m nSe of env
<br />applicable chemical, the permittee must submit n revues[ far approval which includes dre most current ,Ylnreri~,(
<br />Safety Dam Sheer (,Y/SDSJ for thal cltenucaL Untd approved. use of mty chemical m waters that may be
<br />discharged could result in discharge of polhuana not authorized antler the pennir ,Ilsa see Pnrt //.,-I 2. oJthe
<br />permit.
<br />B. YVas'[ewater Treatment Uescriptiat
<br />•
<br />.fs mining e.rpnnds, pwuls with new outfalls 012, 013 and 014 are being ridded m rile treatment svstems at the
<br />existing Yoast ,Llir7e and ponds wzdr new outfalls Oli, 016 and 017 are being nrlded to the trtaunent system at the
<br />existing Seneca 11YV ~Y(ine. .ltl outfalls except 015 may treat rind discharge wastewater from surface runoff, sitrfnce
<br />mine pit dewatering (cmuidered as mine water) aid/or spoils spring water. Pond/outjall 015 will discharge only
<br />surface rwroff. Efflteeru Jlow from rite primary spil!•.vays nt all six outfalls will be measured with parshnll Jlumes that
<br />are sued according ro dre maximum flow expected [hrough those spillways. /nfonrmtion about the new rind existing
<br />outfalls is summarized in the follor+•ing table.
<br />Table V-1-Dischrtr¢e Poinl Information
<br />Oufjall Wastewater Source Avg Flow, ,YIGD Dailyy blot Flaw,
<br />MGU 10- r/24-hr Event
<br />Vat MG Pond Stora ge
<br />Volume, ,Yi(~
<br />002 SR, SS 0.33/6 7.4233 3.3900 10.2056
<br />003 SR, TW 0.0903 0.3557 0.1343 0.9319
<br />004 SR. SS 0. / 948 4.6844 2. ! 776 2.7208
<br />005 SR, SS 0.0165 0.7978 1.5119 0.6126
<br />006 SR. SS, ,Yf W 0.0543 1.1563 4.1350 !.5250
<br />008 SR, SS, hIW 0.1782 2.1600 1.8704 2.8153
<br />009 SR 0.0422 0.1584 1.!274 1.342
<br />010 SR, SS, NIW 0.181 * 3.432* 5.9631 3.?878
<br />0l/ SR, SS, rY1W 0.03?* 0.963* 0.8277 0.5670
<br />Olt " SR, SS, ,YI W * • * " 4.7639 1.3034
<br />013 " SR, SS, tYl W * * * * 0.6452 0.2867
<br />014" SR, SS, .WW ** ** 2.9197 0.6452
<br />0/5" SR ** ** 0.5865 0.5377
<br />016 " SR, SS, MW * * * * 2 0724 0.7690
<br />017 ~ SR, SS, ,YIW "* ** 0.7690 0.6224
<br />SR means Surface Runoff SS means Spoils Spring, rtilYV means Mine Water. TYV means Tntck Wash
<br />n ,Vew outfall nrlded vin this amendment number 1
<br />Design volumes
<br />"" Because these are new outfalls. na discharge data have been accunudared.
<br />Winter access m new mufnlls Of 4, 015, 016 rind 017 may be hazardous nt times to dre operator. They have
<br />requested the same reduced ivirver monitoring frequencies tJint now apply to outfalls 004. 005, 008. 009 mid 011
<br />• T1te jari'irv contact persa7 nrtr injured recently ,vlnle attempting to perjornr the required monitoring. Ne sustained
<br />several crrc:ed rips and nutsc!e damage to /ds arni T.~:e Ci•as:on does aot believe that pennutee personnel should
<br />be required to place dtenrselves in a position of harm to obtain dtsdturge uraiimring snmoles. See discussion in
<br />secuon V1.8. jollowmg Table V/-8.
<br />
|